Direct students to draw and cut the 2-D shapes out of construction paper.

Ask students to work with partners within their group to draw the lines of symmetry on the shapes and fold the shapes to see if they are equal halves.

Have students save the folded shapes in sandwich bags and put their group number with a permanent marker on the sandwich bag.

Set the timer to 20 minutes.

Discuss with students which shapes had lines of symmetry and how many. Discuss with students if any shapes had no lines of symmetry.

Have each group talk about one shape and its lines of symmetry.

Independent Working Time

(25 minutes)

Instruct students to complete the Symmetry worksheet.

Ask your students to complete the Your Half, My Half worksheet.

Go over the worksheets as a class.

Differentiation

Enrichment: Instruct students to complete the Learning Symmetry Owl worksheet. This worksheet is more challenging because there are more aspects to the image.

Support: Ask your students to come to the back of the class. Guide them to draw food items they like on a sheet of paper. Ask if they would like to divide the item with a friend equally. Have them draw a line over the items to see if they can equally share or not. Explain that if they can cut the item into equal pieces, then the item has a line of symmetry. Instruct students to draw more lines of symmetry if possible, and ask if more equal pieces could be created out of that food item.

Assessment

(20 minutes)

Direct your students to complete Sailing the Sea worksheet.

Review and Closing

(10 minutes)

Have your students take out their sandwich bags from the lesson.

Instruct a student to pull out a shape without looking and explain the lines of symmetry in that shape.